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luandai123
學(xué)習學(xué)習,不斷學(xué)習
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樓主  發(fā)表于: 2013-03-09 18:19
剛在設備上加了臺掃描槍?zhuān)怯萌釷系列的QJ71C24模塊與之相連接,兩端都是九針母頭,所以小弟就做了跟rs232的線(xiàn),開(kāi)始是23交叉5直連,結果通訊失敗,后面就重新再做了一根,235都直連,ok了,所以就想在此請教個(gè)問(wèn)題,rs232直連厚實(shí)交叉區別在哪里?
luandai123
學(xué)習學(xué)習,不斷學(xué)習
級別: 略有小成
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發(fā)帖數量: 88 個(gè)
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1樓  發(fā)表于: 2013-03-11 22:27
恩,是的
luandai123
學(xué)習學(xué)習,不斷學(xué)習
級別: 略有小成
精華主題: 0
發(fā)帖數量: 88 個(gè)
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下載積分: 1878 分
在線(xiàn)時(shí)間: 58(小時(shí))
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2樓  發(fā)表于: 2013-03-11 22:28
找了好久的度娘才得到答案的,你說(shuō)的也是對的,謝謝了

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